Datasheet Linear Technology LT1944

Datasheets

LT1944Dual Micropower Step-UpDC/DC Converter U FEATURESâ– â– â– â– â– â– DESCRIPTIO The LTÂ®1944 is a dual micropower step-up DC/DC converter in a 10-pin MSOP package. Each converter isdesigned with a 350mA current limit and an input voltagerange of 1.2V to 15V, making the LT1944 ideal for a widevariety of applications. Both converters feature a quiescent current of only 20ÂµA at no load, which further reducesto 0.5ÂµA in shutdown. A current limited, fixed off-timecontrol scheme conserves operating current, resulting inhigh efficiency over a broad range of load current. The 36Vswitch allows high voltage outputs up to 34V to be easilygenerated in a simple boost topology without the use ofcostly transformers. The LT1944â€™s low off-time of 400nspermits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-consciousportable applications. Low Quiescent Current:20ÂµA in Active Mode 1VVFB < 0.6V 4001.5 Switch VCESAT ISW = 300mA 250 350 mV 350 400 mA 28 3 ...